Shutter for moving-picture machines.



W. P. MOILVANIE & W. s. QUINBY. 'SHUTTER FOR MOVING PIGTURE MACHINES.

, APPLICATION FILED umm, 1912.

. 1,068,912 Patented July 29, 1913.

" ters for moving picture machines, and has WILIAM 1. MOILVANIE ANDWILFREDS. QUINBY, 0F BVEIILINGHAM, WASHINGTON.

SHUTTER FOR MOVING-PICTURE `IVJIACHIIIWIEIS.

Specieation of `Letters Patent.

lPatemma July 29.1913.

.Application filed January 24, 1912. serial No. 673,008.

To all whom t may concern.'

Be it known that we, WILLIAM P. MCIL- vANm and WILFRED S. QUINBY,citizens of the United States, residing at Bellingham, in the county ofWhatcom and State of Washington, have invented a. new and useful-Improvement in Shuttersl for ',Mcving- 'Picture Machines, of which thefollowing isv a specification.

Our invention is an improvement in shutfor its object the provision of asimple, easily operated device for adjusting the shutter, which may beapplied to existing machines without other change than removing thelshutter. l

In the drawings, Figure 1 is a vertical section of fthe improvement.Fig. 2 is a front view, and Fig. 3 isa section on the line 3-3 ofjrFig.1, lookingin the direction of the arrows. V

In the present embodiment ofthe invention, the shutter 1 is in the formof`a dis-k having its edge beaded at 2, and a reinforcing Wire 3isinserted in the bead. The disk is provided with three segmental openings4, -spaced at equal distances fromeach other,

and the disk is annularly grooved on its outer face, and on the innerside. of the openings, to form an annular rib 5 on the inner face. ings4 are very close tothe bead 2, and the inner edges are close to the rib5. The disk is mounted on a sleeve or bushing 6, arranged on a' shaft 7,and thel sleeve is secured tothe shaft by a set screw 8. The disk isheld on the sleeve, by means of a collar \,9, encircling the shaft onthe outer side of the disk, and having an annular lateral fiange 10at-the end adjacent to the disk, and fitting against theouter facethereof. A washer 11 encircles the sleeve on the opposite side of thedisk from the collar, and screws 12 are passed through the washer andthe disk and engage the collar to secure i the parts together.

The sleeve' 6 is provided with an annular series 13 of teeth, forming aworin wheel integral with the sleeve, and the collar 9 is provided withan internal annular. groove or recess 14, at the worm wheel. A, wormshaft 15 is journaled in the enlargement, on the upper side .of thesleeve, and transversely thereof, and the said shaft engages the wormwheel. The worm shaft is provided at one `end Awith a milled.' head 16,lfor turning the The outer edges of the opensame, and the other end ofthe shaft isreduced as indicated at 19, and passes through an opening inthe collar, and is engaged by a washer 17, which is secured to thereduced portion by a pin 18.

The collar 9 is enlarged above and below the shaft 7 as shown at 20 and20, and the enlarged portion 20 above the shaft is recessed. asindicated at 21 to receive the worm shaft. It will be evident that whenthe worm shaft is rotated by turning the head 16, the sleeve 6 and theshutter will be ro-l tated.

The shaft 7 is a part of the usual apparatus 22, and the shutter isadjusted with respect to the said shaft. to adjust the shutter withrespect -to the shaft, the worm shaft 15 is turned in any suitablemanner. The said shaft is journaled on thecollar 9 and it will beevident that when the said shaft is turned, the collar 9 and the shutterwill be moved angularly with respect to the sleeve 6, the said sleevebeing secured to the shaft 7 by the set screw 8.

It will be evident that the worm shaft 15 and the worin wheel constitutenot only a means for turning the shoulder, but also a means for holdingit in adjusted position, sincejt is obvious that theshutter could not beturned without turning t-he worin wheel.

The improvement may be used with any machine of the character inquestion, and without any change in the machine, except the removal ofthe old shutter.

We cla-im:

When it is desired 1. In combination with the shutter supporting shaftof a kineinatograph apparatus, of a shutter comprising a diskhaving acentral opening for` the shaft, a sleeve on the shaft betweenl theshutter and the shaft, a set screw traversing the sleeve and engagingthe shaft, a. washer on the sleeve engaging the'inner face ofI the disk,a collar on the sleeve at the outer side of the disk and having anannular lateral flange engaging the face of the disk, screws engagingthe washer, the shutter and the fia-nge for securing them together, saidsleeve having an annular series of teeth4 near the outer end of thecollar, the collar having an annular groove at the teeth,a worm shaftjournaled in the colla-r transversely of the sleeveand engaging theteeth, and a h'ead on the worm shaft for turning the same.

2. In combination 'with the shuttersupiend of the'collar, the collarhaving" an an-` nular groove at the teeth, a Worin shaft journaled inthe collar'transversely of the sleeve and en aging the teeth, and a headon the Worm siaft for turning the same.

3. In combination with the shutter 'supporting shaft of akineinatog-raph apparatus, of a shutter comprising a disk havinga'central opening for the shaft, a sleeve on the shaft between theshutter and the.'shaft, means for detachably securing the sleeve to theshaft, a collar on the shaft on the outer side of the shutter, means forsecuring the shutter to the collar, said sleeve having an annular seriesof teeth near the outer end of the collar, the collar having an annulargroove at the teeth, a Worm shaft journaled in the collar transverselyof the sleeve and engaging the teeth, and a head on the Worm shaft forturning the same.

4. In combination With the shutter supporting shaft of a kinematofg'raphapparatus, of a shutter comprising a disk having a central opening forthe shaft, a sleeve on the shaft between the shutter and the shaft,means for detachably lsecuring the sleeve to the shaft, a collar on theshaft secured to the shutter, a worm shaft journaled in the collar, anda Worm Wheel secured tothe sleeve and engaging the shaft.

5. In combination with the shutter supporting shaft of a kinematographapparatus, of a shutter comprising a disk having a central opening forthe shaft, a sleeve on the shaft, a detachable connection between thesleeve and the shaft, said shutter being rotatable on the sleeve, andmeans for rotating the shutter and for holding it in adjusted position.

7. In combination with the shutter supporting shaft of a kinematographapparatus, of a shutter having Yan opening for receiving the shaft,sa-id'shutter being rotatable on the shaft, and means for rotating theshutter and for holding it in adjusted posil tion.

WILLIAM P. MCILVANIE. v IVILFRED S. QUINBY.

Witnesses: v

E. D. KENYoN, G. D. SIMPSON.

